What multiplexing technology lowers cost by spacing frequency bands wider apart to allow for cheaper transceiver equipment?
A) statistical time division multiplexing
B) dense wavelength division multiplexing
C) coarse wavelength division multiplexing
D) spaced wavelength division multiplexing

Question

Quizplus · Accepted Answer

Coarse wavelength division multiplexing (CWDM) is a multiplexing technology that spaces frequency bands wider apart, allowing for cheaper transceiver equipment. CWDM operates at wavelengths that are spaced 20nm apart, whereas Dense Wavelength Division Multiplexing (DWDM) operates at wavelengths that are spaced only 0.8nm apart, making it more expensive. Statistical time division multiplexing is a technique used to allocate bandwidth dynamically based on demand, and spaced wavelength division multiplexing is not a commonly used technology.

What Multiplexing Technology Lowers Cost by Spacing Frequency Bands Wider